This study evaluates the reduction of lymphedema and its complications in obese women treated with a muscle training and weight loss program as well as the improvement body composition, muscle strength, quality of life and neurocognitive function, compared to a conventional treatment control group.
Introduction: Breast cancer is the most frequent tumour in women. Breast cancer-related lymphedema (BCRL) occurs in 10 to 36% of patients undergoing dissection and emptying of axillary nodes and between 5 and 17% undergoing sentinel node biopsy. BCRL is associated with discomfort, pain, risk of infections, disability, symptoms of depression and anxiety and worse quality of life. The prevalence of persistent lymphedema increases with the presence of obesity. Aim: In overweight or obese women with BCRL to assess whether a muscle training and weight loss program reduces lymphedema volume and its associated complications, as well as improves body composition, muscle strength, quality of life and neurocognitive function, compared to a conventional treatment control group. Methodology: Open prospective randomized trial of 2 parallel arms. Subjects: patients referred to the Rehabilitation Unit with lymphedema secondary to breast cancer and overweight or obesity. The control group will receive the usual treatment and general dietary recommendations and the intervention group will carry out a program of supervised exercise (strength and aerobic) and weight loss (based on the Mediterranean diet and with a meal replacement). The change in volume in the limb affected by lymphedema, segmental body composition and phase angle (impedance measurement), muscular strength (hand dynamometry), level of physical activity (IPAQ), dietary parameters, quality of life (FACB+4) will be assessed. Cognitive function (Memory FSRCT test), psychological symptoms (anxiety and depression by means of HADS) NS biochemical parameters (albumin, prealbumin, lipids, CRP, 25-OH vitamin D and insulin) will be analyzed.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
100
Intervention group that receives supervised exercise and weight loss program based on individual and group intervention with Mediterranean diet and substitute for a daily meal, manual lymphatic drainage and compression garment if there is more than 600 ml of excess volume in the limb affected.
Hospital Regional Universitario de Málaga
Málaga, Málaga, Spain
To assess the change in volume in the limb affected by lymphedema in the intervention group vs control.
It will be studied whether a reduction of 200 ml of the affected arm is achieved with respect to itself and / or with respect to the healthy one, after training.
Time frame: Baseline, 3rd and 6th month visits
BMI (body mass index) changes
Measured by body composition analysis
Time frame: Baseline, 3rd and 6th month visits
Change in weight
Weight in kg
Time frame: Baseline, 3rd and 6th month visits
Change in fat free body mass
Fat free body mass in kg assessed by bioelectrical impedance analysis
Time frame: Baseline, 3rd and 6th month visits
Change in total fat mass
Total fat mass in kg
Time frame: Baseline, 3rd and 6th month visits
Change in water on arm affected by lymphedema
Water in ml
Time frame: Baseline, 3rd and 6th month visits
Change in water on arm not affected by lymphedema
Water in ml
Time frame: Baseline, 3rd and 6th month visits
Peripheral muscle strength
Measured by hand and quadriceps dynamometry. Assess if strength improves after training.
Time frame: Baseline, 3rd and 6th month visits
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Level of physical activity (IPAQ questionnaire)
Assess whether the level of physical activity improves after training and motivation sessions.
Time frame: Baseline, 3rd and 6th month visits
Quality of life (through the FACB + 4 test)
Assess if it improves after training and at 6 months of follow-up.
Time frame: Baseline, 3rd and 6th month visits
Change in serum albumin concentration
Serum albumin in g/dl
Time frame: Baseline, 3rd and 6th month visits
Change in serum prealbumin concentration
Serum prealbumin in mg/dl
Time frame: Baseline, 3rd and 6th month visits
Change in cholesterol concentration
Serum cholesterol in mg/dl
Time frame: Baseline, 3rd and 6th month visits
Change in LDL concentration
Serum LDL in mg/dl
Time frame: Baseline, 3rd and 6th month visits
Change in TG concentration
Serum TG in mg/dl
Time frame: Baseline, 3rd and 6th month visits
Changes in plasma levels of high sensitivity C reactive protein (hs-CRP)
Plasma levels of high sensitivity C reactive protein (hs-CRP) in mg/dl
Time frame: Baseline, 3rd and 6th month visits
Changes in metabolic control
Measured as HbA1c (glycated hemoglobin)
Time frame: Baseline, 3rd and 6th month visits
Changes in insuline resistance
Measured aas HOMA-IR (homeostatic model assessment of insulin resistance)
Time frame: Baseline, 3rd and 6th month visits
Changes in vitamin D
Serum vitamin D in ng/ml
Time frame: Baseline, 3rd and 6th month visits
Diet composition
Adherence to the Predimed Plus diet pattern 17 (0 - minimum adherence, 17 - maximum adherence)
Time frame: Baseline, 3rd and 6th month visits